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path: root/drivers/gpio/mpc85xx_gpio.c
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* fdt: allow fdtdec_get_addr_size_*() to translate addressesStephen Warren2016-08-12-1/+1
| | | | | | | | | | | | | | | Some code may want to read reg values from DT, but from nodes that aren't associated with DM devices, so using dev_get_addr_index() isn't appropriate. In this case, fdtdec_get_addr_size_*() are the functions to use. However, "translation" (via the chain of ranges properties in parent nodes) may still be desirable. Add a function parameter to request that, and implement it. Update all call sites to default to the original behaviour. Signed-off-by: Stephen Warren <swarren@nvidia.com> Reviewed-by: Simon Glass <sjg@chromium.org> Squashed in build fix from Stephen: Signed-off-by: Simon Glass <sjg@chromium.org>
* dm: gpio: MPC85XX GPIO platform data supportHamish Martin2016-07-11-7/+30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Define a platform data structure for the MPC85XX GPIO driver to allow use of the driver without device tree. Users should define the GPIO blocks for their platform like this: struct mpc85xx_gpio_plat gpio_blocks[] = { { .addr = 0x130000, .ngpios = 32, }, { .addr = 0x131000, .ngpios = 32, }, }; U_BOOT_DEVICES(my_platform_gpios) = { { "gpio_mpc85xx", &gpio_blocks[0] }, { "gpio_mpc85xx", &gpio_blocks[1] }, }; This is intended to build upon the recent submission of the base MPC85XX driver from Mario Six. We need to use that new driver without dts support and this patch gives us that flexibility. This has been tested on a Freescale T2080 CPU, although only the first GPIO block. Signed-off-by: Hamish Martin <hamish.martin@alliedtelesis.co.nz> Reviewed-by: Mario Six <mario.six@gdsys.cc> Tested-by: Mario Six <mario.six@gdsys.cc> Acked-by: Simon Glass <sjg@chromium.org>
* dm: gpio: Implement open drain for MPC85XX GPIOmario.six@gdsys.cc2016-06-03-0/+41
| | | | | | | | | This patch implements the open-drain setting feature for the MPC85XX GPIO controller. Signed-off-by: Mario Six <mario.six@gdsys.cc> Reviewed-by: Simon Glass <sjg@chromium.org> Reviewed-by: York Sun <york.sun@nxp.com>
* dm: gpio: Add driver for MPC85XX GPIO controllermario.six@gdsys.cc2016-06-03-0/+187
This patch adds a driver for the built-in GPIO controller of the MPC85XX SoC (probably supporting other PowerQUICC III SoCs as well). Each GPIO bank is identified by its own entry in the device tree, i.e. gpio-controller@fc00 { #gpio-cells = <2>; compatible = "fsl,pq3-gpio"; reg = <0xfc00 0x100> } By default, each bank is assumed to have 32 GPIOs, but the ngpios setting is honored, so the number of GPIOs for each bank in configurable to match the actual GPIO count of the SoC (e.g. the 32/32/23 banks of the P1022 SoC). The usual functions of GPIO drivers (setting input/output mode and output value setting) are supported. The driver has been tested on MPC85XX, but it is likely that other PowerQUICC III devices will work as well. Signed-off-by: Mario Six <mario.six@gdsys.cc> Reviewed-by: Simon Glass <sjg@chromium.org> Reviewed-by: York Sun <york.sun@nxp.com>